Apparatus for the purification of liquids



S. SIMKOVITS APPARATUS FOR THE PURIFICATION OF LIQUIDS June 19, 1945 Filed June 16, 1939 2 Sheets-Sheet 1 an t/ R 0 W J 0 0 0 0 0 0 0 0 0 0 0uv 0 0 0 0 0 0 0 0 0 0 0 0 w 0 0 000000 0 O (Q H0MN0 0 0 0 0 O t 0 0 0 0 0 0 0 0 0 0 0 \0 0 0 0 0 0 0 0 0 v$ eu0n0u0n0u0w 0 0 0 0 0 0 0 0 0 0 0 0 |0-0000000 0 0 0 0 0 0 0 0 0 0 0 0 June 19, 1945.

s. SIMKOVITS 2,378,737

APPARATUS FOR THE PURIFICATION OF LIQUIDS Filed June 16, 1939 2 Sheets-Sheet 2 fliibrney- Patented June APPARATUS For; THE runuuon'rron 0F LIQUIDS Sandor Simkovit s, Budapest, Hungary; vested in the Alien Propertyf'Custodian,

Application June is, 1939, Serial No. 279,533

- uids, especially of oil,

.In'Hungary J une as, 1938 .2 claims. (01. 210-154) The invention relates to apparatus i'or the purification, particularly-for the filtering of liqthe said apparatus-being much simpler, of greater output capacity and greater safety of service as compared to apparatus ota similar kind Thefilteri-ng apparatus according to the invenknown up to-now.

tion is fitted with filtering members arranged in the container i'nten uid to be filtered,

tied to accommodate the liqand through which the-liquid.

to be filtered is driven by pressure or drawn by suction. .The substance of the invention consists in that the filtering member is composed of a single filtering drum, or of a plurality of filtering drums, provided in the container, preferably in the vicinity of the bottom of the latter, a pipe for the discharge 0 f the filtered liquid, projecting into the interior of the drum or'drum's, being connected to the said The advantages of to the invention are 1. Owing to the drums, not only its but also the end su drumor drums.

the following:

arrangement of the drum or or their cylindrical surfaces, rfaces opposite to each other are representing effective working surfaces, which circumstance surface.

2. With pneumatic operatiomthe filterdrum or drums will remain active assures a high amount offiltering liquid sinks below the upper end surface of the said drum or drums.

3. The active surface of the filtering members will be considerably inactive space will is well-known, that in the case this kind, inactive part of the vessel plane laid through tering body.

increased, and, moreover, the be space isrepresented' by that which is situated below the the highest point of the fil- The increase of the filtering surface will also cause the necessary frequency of cleanings to be substantially reduced as it will be possible for the impurities to become distributed over a larger surface.

4. In the case of the filter according to the invention, the discharge of the filtered liquid is elfected in a very s single pipe issuing drums. In connect imple manner by means of a into the filtering drum or ion herewith the complicated system of ducts provided in the lid of the container in the types of apparatus employed up to now, through which system of ducts the various filtering pipes, com discharge pipe, can The invention is municated with the common be dispensed with.

equally applicable for filterthe arrangement according until the level of the 30 substantially reduced. It

of" apparatus of gauge pressure of other embodiment in tight manner by the lid up to the height indicated on the drawings with ing apparatus in which the liquid is. driven through the filter by m'eans'of compressedfair, and for of liquid pressure. In. the case of apparatus of the last-named type, it is also possible, in order in whichthe liquid; tobezfiltered'is' driven through the filtering drum by means of air pressureacting on the level: of the liquid, it being alsopossible to replace: the pressure eifect by a suction. effect. Fig. 2- is a vertical. longitudinal section of an which the liquid to be" filtered: is driven: through the filtering drum bythe the liquiddeliveredunder pressure into the container; l

Fig. 3- is a horizontal section along line I--I of Fig. 2.

Fig. 4 is a vertical section of an embodiment in which two filtering drums fitted with scrapers are employed. on Fig, 5 the circulating device mounted into the container when boiling the liquid is represented during use. i

The container 1, which.

is closed in an. air- 3 (Fig. 1) is filled, e. g.

the liquid to be filtered. Through the branch 2, fitted with a non-return valvenot shown on the drawings, compressed air is delivered into the container. In the container I a filtering drum 5 is suspended at a certain distance from the bottomof the container, so that not only the cylindrical surface of the said drum but also its bottom and top surfaces are representing active Working surface. The height of the filtering drum amounts preferably to a fraction, at most to onethird, e. g. to one-fifth or one-sixth of the height of the container I. The filtering drum 5 is surrounded in a. known manner by a filtering cloth 6, which receives the coarser impurities.

The filtering drum apparatus in which. this is doneby means 5 preferably possesses the form of a fiat cylinder, of a prism, or of a hollow .in the direction of the arrow through the pipe 2 body of any desired shape, which may also be oval and the height of which is smaller than its smallest dimension measured at right angles to its longitudinal axis. I

According to Fig. 1, the drum 5 is suspended on the central discharge pipe 1, e. g. in such a manner that the branch 9 of the said pipe, which projects into the drum, is screwed into the sleeve 8.

Under the action of the pressure of the com.- pressed air or liquid, introduced through the branch 2, or of the vapours produced when heat.- ing the liquid, e. g. oil, to be filtered, the level of the liquid contained in the container I will gradually sink, the liquid will pass through the walls of the filtering drum 5 into the interior of the said drum, and the filtered liquid will be discharged in the direction of the arrows through the branch 9, and through the pipe I. The embodiment according to Figs. 2 and 3 diffew from the one according to Fig. 1 in that filtering pipes. I0, of e. g., circular cross-section,

and of any desired height, extending, say approximately up to the lid 3, are branching off from the filtering drum 5, the said pipes being arranged, preferably uniformly spaced, around the pipe 1, Each of thefiltering pipes It is covered by a filtering cloth II. The container l is filled with the liquid delivered into it under pressure through the branch 2, the said liquid being, owing to the pressure above the atmospheric, driven through the filtering ipes l and through the filtering drum 5. The filtered liquid is discharged 1. In the case of all embodiments, the shape of the drum may, of course, also differ from the shapes represented on the embodiments illustrated.

In the case of the filtering apparatus according to Fig. 4 two filtering drums 5, 5 are provided in order to increase the output capacity of the apparatus. Any desired number of drums may, in fact, be provided. The apparatus according to Fig. 4 difiers from the one according to Fig. 2

also by the provision of scraper bars for cleaning the filtering drum, which are mounted on the pole l5 and may be operated, for instance, by means.

of a handle IS. The pole I5 is mounted in a manner tight against leakage below in the drum bottom and above in the pipe '5. The scraper device l4 may also be operated under pressure so that, for the purposesof cleaning, it is not necessary to dismantle the apparatus.

If oil is to be filtered, and particularly if it is contaminated by a substantial quantity of water, the oil should, before filtering, after the removal of the lid 3 and of the filtering drum 5, first be boiled. For this purpose use is made of the circulating device represented on Fig, 5, which consists ing the bottom holes i8 is supported.

; possibility of the water When the container filled with oil and equipped with this circulating device is heated, the circulation of liquid indicated by means of arrows on Fig. 5 is set up. This circulation prevents the contained in the oil becoming evaporated suddenly and spurting out oil. Thereby it will be possible to avoid, on the one hand, losses, and, on the other hand, any danger of fire. A duct 23, running around the cylindrical shell of the container l, and fitted with a spout 24 is provided for catching any oil that might be carried over after all.

I claim:

1. A filtering apparatus of the class described comprising a container adapted to receivegfiuid material to be treated, a cover sealed oyer; the container, an outlet pipe extending through the cover and rojecting downwardly into said container, a filter drum suspended on the lower po ftion of the outlet pipe and surrounding the inlet end thereof, means for applying a pressure upon the fluid material in the container to force said material through the filter drum and out through the outlet pipe, a rotatable shaft extending to the exterior of the container and having an operating crank thereon, a scraper member attached to said shaft and rotated thereby, said scraper rnember closely overlying the outer surface of the ,filter drum whereby the actuation of thescrapermem ber removes accumulatedmatter fromthefilter tainer, a filter drum suspended onthe lower portion of the outlet pipe and surrounding the inlet end thereof, means for applying a pressureupon the fluid material in the container to force said material through the filter drum and out through the outlet pipe, a rotatable shaft extending outlet pipe, said shaft having an operating crank at its upper-end and ascraper member attached to the lower end of the (shaft, said scraper member closely overlying the outer surface of the filter drum whereby the actuation of the scraper member removes accumulated matter from the filter drumsurface.

SANDOR sIMK vITs. 

